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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2014
Dec. 31, 2015
Derivative Financial Instruments      
Derivative financial instruments     $ 556,828
Treasury Stock      
Treasury Stock, Shares, Retired 56,118,260    
Accumulated Earnings (Deficit)      
Treasury Stock      
Reduction of treasury stock value $ 1,568,000    
Class A common stock      
Treasury Stock      
Reduction of treasury stock value $ 600    
Northstar Manager LLC      
Variable Interest Entity      
Number of years after wireless spectrum license is granted until put right vests 5 years    
SNR Wireless Management LLC      
Variable Interest Entity      
Number of years after wireless spectrum license is granted until put right vests 5 years    
Sling TV Holding L L C | EchoStar      
Redeemable Noncontrolling Interest      
Ownership percentage owned by noncontrolling owners   10.00%  
Number of days following the fifth anniversary of the Exchange Agreement to redeem   60 days